Biunique
a. [数]一( 对) 一的, [语]单向双系列对应的
🗣️ 情景例句
I can't figure out why he quit his job.
我不能理解他为什么要辞职。
Bitter pills may have wholesome effects.
良药苦口利于病。
unless the parents themselves have been unsatisfactory,
除非父母自身不能令人满意，